they're targeting brown's opponent, elizabeth warren. brown claims she lied about her native american heritage, but senator brown will not apologizeist rally. and this morning the principal chief of the cherokee naon issued a statement, demanding answ "i call upon senator brown to apologize for the offensive actions of his staff and their uneducated, unenlightened and racist portrayal of native peoples." just before 7:00 p.m. tonight, senator brown's spokesperson has released this stemen "senator brown has spoken to his entire staff and issued them their one and only warning that this type of conduct will not be tolerated. he regrets that members of his staff did not live up to the hightandards of the people of massachusetts pect rv my friends, may i point out, this is not exactly an apology. in fact, the state democratic party is circulating a new video which shows the raist chanting could be a normal part of the brown campaign. >> wheofsor rrenes aklag s a native american, you know, she could have very easily just said, you know what,